Malicious PDF — malware analysis report

Static analysis result for SHA-256 34494a9df42ef301…

MALICIOUS

PDF

70.8 KB Created: 2021-02-17 07:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 85b6447ca735ecfbd33c53a199c1806b SHA-1: f325e0455f8852ddab23a6807b71470c4208d38e SHA-256: 34494a9df42ef301ad6de38e4661ae0218a7a8de0db20c661674f53d6045105b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/wix?keyword=pacific+region+canada In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_600dc09ba8d1b.pdfIn PDF document text
    • https://cdn.sqhk.co/sijoputolu/jbhbBC4/coloring_games_app.pdfIn PDF document text
    • http://nyvelsets.online/chhattisgarhi_comedy_whatsapp_status_videok4hvq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368237/normal_5fcfef7ed39c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498971/normal_5fd3d84c8bacd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fcf74ddbe964.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/Fdiiehf/cheat_zombie_frontier_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_60199bb568f85.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/iamgfge/best_ping_pong_game_pc.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/1480923420fkw7h.pdfIn PDF document text
    • http://berkeciftci.net/38275116891kn1v6.pdfIn PDF document text
    • http://janurikemodowu.iblogger.org/37527163569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460071/normal_5ffb5cfabea3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lekezaru/99206874248.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/94270974849.pdfIn PDF document text
    • http://tesilodapiz.rf.gd/dinedijowurodavuku.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/zoginum.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 4980 bytes
SHA-256: bff4408c3482b1ea6ed745573a266a6c4c6bcec054ebe8a2a84583bc374787b9
font_01_sfnt_off0000e6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CC 11584 bytes
SHA-256: aeee4bcbfa3f162cd6118f9dd485322f4a1fc2905ea142d69e0e6f2bd33335f2